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den301095 [7]
3 years ago
12

When Steve cut his hand his ________ line of defense was broken

Health
1 answer:
777dan777 [17]3 years ago
8 0

If the pathogens are able to get past the first line of defence, for example, through a cut in your skin, and an infection develops, the second line of defence becomes active. Through a sequence of steps called the immune response, the immune system attacks these pathogens.

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